Heating device for a heat-not-burn cigarette smoking set

Abstract

The application relates to a heating device of a heat-not-burn cigarette set, which comprises a container, a heating body and a conductive assembly. The container is provided with a containing cavity, at least part of the containing cavity being used for containing a cigarette. The heating body is arranged in the containing cavity, and a flow channel for airflow circulation is arranged in the heating body. The conductive assembly is arranged in the containing cavity and is electrically connected with the heating body. The heating body can heat the airflow flowing through the flow channel after the conductive assembly is powered on, and the airflow can roast the cigarette. The heating device of the heat-not-burn cigarette set can heat the heating body to a set temperature by connecting the conductive assembly with the heating body, and then the heating body can exchange heat with the flowing airflow to form a uniform hot airflow. Meanwhile, when the container is inserted with the cigarette, the hot airflow can roast the inserted cigarette to realize uniform heating of the cigarette.

Description

Technical Field

[0001] This application relates to the field of smoking device technology, and in particular to a heating device for a heated non-combustible cigarette smoking device. Background Technology

[0002] Current graphite heating elements work by placing a heating wire inside the graphite heating element, then heating the heating wire. Through contact between the heating wire and the graphite heating element, heat is conducted from the heating wire to the graphite heating element, which then heats the air to form a hot airflow that bakes the cigarette.

[0003] However, since graphite is a conductive material, insulation is required between the heating wire and the graphite heating element when heating the graphite heating element. The common method is to insert a ceramic tube between the heating wire and the graphite heating element, and then apply glaze to the ceramic tube for fixation and insulation. However, this method has high material and labor costs.

[0004] In addition, the heat generated by this method diffuses from the center of the graphite heating element to the periphery, which results in a large temperature difference between the edge and center of the graphite heating element, leading to low temperature uniformity of the airflow after heating the airflow. Utility Model Content

[0005] Therefore, it is necessary to provide a heating device for heating non-combustible cigarettes to address the problem that the heating element's center and edge temperatures are uneven, which leads to the inability to evenly heat the airflow.

[0006] The first aspect of this application provides a heating device for heating non-combustible cigarettes, comprising:

[0007] A container having a receiving cavity, at least a portion of which is used to receive a cigarette.

[0008] A heating element, wherein the heating element is disposed within the accommodating cavity, and the heating element has a flow channel for airflow; and

[0009] A conductive component is disposed within the accommodating cavity and is electrically connected to the heating element. When the conductive component is energized, the heating element can heat the airflow flowing through the flow channel and bake the cigarette through the airflow.

[0010] In one embodiment, the conductive component includes a first conductive element and a second conductive element, both of which are electrically connected to the heating element.

[0011] In one embodiment, the heating element has a mounting hole that extends through the heating element along its length. The first conductive element is disposed within the mounting hole, and the second conductive element is disposed on the outer peripheral surface of the heating element.

[0012] In one embodiment, the first conductive element includes a conductive body disposed in the mounting hole and penetrating the heating element, and the first end of the conductive body extending out of the mounting hole extends radially out of a limiting platform;

[0013] The second conductive element has a ring-shaped structure and is disposed around the outer peripheral surface of the heating element so that when energized, the second conductive element is connected to the first conductive element.

[0014] In one embodiment, the first conductive element extends from the second end of the cigarette stick to form a fixing portion, and the fixing portion is adapted to be provided with a fixing member to fix the first conductive element to the heating element.

[0015] In one embodiment, the container includes a first shell and a second shell, the second shell being fitted over the first shell and connected to the first shell, and the outer side wall of the first shell and the inner side wall of the second shell forming a vacuum cavity.

[0016] In one embodiment, the cavity wall of the accommodating cavity is provided with a protruding ring, which separates the accommodating cavity to form a first chamber and a second chamber. The first chamber is connected to the second chamber. The first chamber is used to accommodate the cigarette stick, and the conductive component and the heating element are disposed in the second chamber.

[0017] In one embodiment, the heating device further includes an insulating support disposed between the inner wall of the container and the heating element. The insulating support includes a first support and a second support, the first support abutting against a first end of the heating element and the second support abutting against a second end of the heating element to restrict axial movement of the heating element.

[0018] In one embodiment, the first support includes a first support portion and a second support portion connected to the first support portion. The first support portion is disposed between the cavity wall of the accommodating cavity and the outer wall of the heating element, and the second support portion is disposed between the protruding ring and the heating element, and abuts against the first end of the heating element.

[0019] In one embodiment, the second bracket includes a third support portion and a fourth support portion. The third support portion is disposed between the cavity wall of the accommodating cavity and the second conductive element. The fourth support portion extends from the third support portion toward the center of the heating element and abuts against the second end of the heating element.

[0020] The heating device of the aforementioned heated non-combustible cigarette device connects a conductive component to a heating element. The conductive component can heat the entire heating element to a set temperature. The heating element has a flow channel for airflow. When the airflow passes through the heating element, the heating element can exchange heat with the airflow, thereby forming a uniform hot airflow. When a cigarette is placed in the container, the formed hot airflow can bake the placed cigarette to ensure that the cigarette is heated evenly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal structure of the heating device of a heated non-combustible cigarette device according to an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the heating element of a heating device for a heated non-combustible cigarette device according to an embodiment of this application.

[0023] Figure 3 This is an assembly diagram of the heating element and conductive components of a heating device for a heated non-combustible cigarette device according to an embodiment of this application.

[0024] Figure 4 This is a schematic diagram of the structure of the container of the heating device for a heated non-combustible cigarette device according to an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10. Heating element; 11. Flow channel; 12. Mounting hole; 13. Limiting part;

[0027] 20. Conductive component; 21. First conductive element; 211. Fixing part; 212. Limiting platform; 22. Second conductive element; 23. Fixing element;

[0028] 30. Container; 31. Receiving cavity; 32. First shell; 321. Protruding ring; 322. First chamber; 323. Second chamber; 33. Second shell; 34. Vacuum chamber; 35. First support; 351. First support part; 352. Second support part; 36. Second support; 361. Third support part; 362. Fourth support part;

[0029] 40. Cigarettes. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Currently, heating graphite is achieved using a heating wire. This involves placing the heating wire inside a graphite heating element, then heating the wire. Heat is conducted through the wire to the graphite heating element, which in turn heats the air, creating a hot airflow that bakes the cigarette. However, this method requires consideration of insulation between the wire and graphite, as well as the inconsistent temperature distribution across the graphite. Specifically, the graphite may have a higher temperature at the center and lower at the edges, resulting in inconsistent heating of the airflow and consequently affecting the baking effect on the cigarette. Therefore, to ensure consistent airflow temperature after heating by the graphite, this application provides a heating device for heating non-combustible cigarettes.

[0034] like Figure 1As shown, the heating device for the heated non-combustible cigarette device includes a heating element 10, a conductive component 20, and a container 30. The container 30 has a receiving cavity 31, and at least a portion of the container 30 is used to hold a cigarette 40. The heating element 10 is located in the receiving cavity 31, and the heating element 10 has a flow channel 11 for airflow. When the conductive component 20 is electrically connected to the heating element 10, the conductive component 20 can heat the heating element 10 until it reaches a set temperature. The heated heating element 10 can heat the airflow flowing through the receiving cavity 31. The heated airflow then evenly heats the placed cigarette 40 until the cigarette 40 is ready to be smoked. The cigarette 40 is then removed, thus achieving non-combustible heating of the cigarette 40.

[0035] Specifically, the heating element 10 can be made of graphite. Graphite has excellent electrical and thermal conductivity and impedance characteristics. Therefore, using it as the heating element 10 allows for better heat exchange with the flowing airflow, thereby heating the airflow. Furthermore, the high uniformity of graphite as the heating element 10 ensures consistent airflow temperature after heating. Simultaneously, the graphite heating element 10 directly contacts the conductive component 20 for heating, eliminating the need for secondary heat transfer and effectively ensuring high thermal energy utilization.

[0036] Specifically, the conductive component 20 includes a first conductive element 21 and a second conductive element 22. Both the first conductive element 21 and the second conductive element 22 are electrically connected to the heating element 10, so that current can flow between them after the first conductive element 21 and the second conductive element 22 are connected through the heating element 10. When current flows through the heating element 10, the current generates resistance heat within the heating element 10, enabling the heating element 10 to convert electrical energy into heat energy to heat the flowing air.

[0037] In this embodiment, the first conductive element 21 can be the positive electrode and can be configured as an electrode post. The second conductive element 22 can be the negative electrode and can be configured as an electrode ring. Both the electrode post and the electrode ring can be connected to current so that the current can flow from the electrode post through the heating element 10 to the electrode ring.

[0038] Therefore, after the first conductive element 21 and the second conductive element 22 are electrically connected through graphite, they can directly heat the graphite without the need for a heating wire, which would require a ceramic tube for insulation between the heating wire and the graphite. This reduces the cost of setting up an insulation structure. Furthermore, the installation of the first conductive element 21 and the second conductive element 22 with the graphite only requires contact and fixation, eliminating the need for complicated installation methods and thus improving the ease of installation.

[0039] In addition, when the graphite is electrically heated by the first conductive element 21 and the second conductive element 22, the current output between the two moves within the graphite. As a resistor, the graphite can directly generate heat to serve as the heating element 10. Since the graphite material is uniform, using graphite as the heating element 10 can ensure that the temperature of each part remains consistent. Furthermore, when the airflow passes through the graphite, the graphite can form a heat exchange with the airflow, so that the temperature of the heated airflow can also remain consistent.

[0040] More specifically, in order to facilitate heat exchange with the airflow, a through flow channel 11 is provided in the heating element 10. The first end of the flow channel 11 is used to receive the airflow, and the second end of the flow channel 11 is connected to the heat exchange space 31, so that the airflow can flow from the first end to the second end of the flow channel 11, and heat exchange can be formed between the airflow and the heating element 10 during the flow of the airflow, so as to ensure that the airflow is uniformly heated.

[0041] In addition, in order to ensure that the airflow can flow smoothly in the accommodating cavity 31, multiple flow channels 11 can be provided on the heating element 10. All multiple flow channels 11 can realize the flow of airflow, thereby ensuring that after the cigarette 40 is placed in, the hot airflow heated by the heating element 10 can evenly and quickly bake the cigarette 40.

[0042] like Figure 2 As shown, a mounting hole 12 is provided in the middle of the heating element 10, and the mounting hole 12 penetrates the heating element 10 along its length. A first conductive member 21 is disposed in the mounting hole 12 and can penetrate the heating element 10, and a limiting platform 212 extends radially from the first end of the first conductive member 21. A second conductive member 22 surrounds the heating outer periphery of the heating element 10. Furthermore, the limiting platform 212 extending radially from the first end of the first conductive member 21 abuts against the end of the heating element 10.

[0043] When current is applied to the first conductive element 21 and the second conductive element 22, the current flows between the heating elements 10. At this time, the heating element 10 (graphite) acts as a resistor, electrically connecting the first conductive element 21 and the second conductive element 22. Furthermore, when current flows between the first conductive element 21 and the second conductive element 22, the material of the heating element 10 (graphite) is uniform, thus achieving uniform overall heating. Simultaneously, when airflow flows within the channels 11 opened on the graphite, the heated graphite can exchange heat with the flowing airflow. Since the overall temperature of the graphite remains relatively constant after heating, the airflow passing through all parts of the heating element 10 can be heated to an almost uniform temperature during heat exchange between the graphite and the airflow.

[0044] like Figure 3As shown, a limiting platform 212 extends from the first end of the first conductive element 21, and a fixing part 211 extends from the second end. A fixing member 23 is provided at the second end of the first conductive element 21, that is, the fixing member 23 is connected to the fixing part 211 so that the first conductive element 21 can be fixed on the heating element 10. At the same time, the mounting hole 12 opened in the middle of the heating element 10 can restrict the radial movement of the first conductive element 21. Thus, through the cooperation of the limiting platform 212, the fixing member 23 and the mounting hole 12, it is ensured that the first conductive element 21 can be stably fixed on the heating element 10 and will not have any positional displacement.

[0045] Specifically, the fixing part 211 extending from the first conductive element 21 can be configured as a threaded fixing part 211, and the thread on the threaded fixing part is an external thread. The fixing element 23 can be configured as an internal thread sleeve, which has an internal thread. The internal thread of the internal thread sleeve can cooperate with the external thread on the threaded fixing part 211. The first fixing element 23 can be fixed on the heating element 10 by screwing in the internal thread sleeve. The threaded cooperation method can also facilitate the disassembly and assembly of the first conductive element 21.

[0046] like Figure 4 As shown, the container 30 includes a first shell 32 and a second shell 33. The second shell 33 is sleeved outside the first shell 32 and connected to the first shell 32. A vacuum cavity 34 is formed between the outer side wall of the first shell 32 and the inner side wall of the second shell 33.

[0047] Specifically, the cavity wall of the accommodating cavity 31 is also provided with a protruding ring 321, which can divide the accommodating cavity 31 into a first chamber 322 and a second chamber 323, and the first chamber 322 and the second chamber 323 are connected. The first chamber 322 is used to accommodate the cigarette 40, and the inserted cigarette 40 abuts against the protruding ring 321. The conductive component 20 and the heating element 10 are disposed in the second chamber 323.

[0048] When the cigarette 40 is heated, it is first placed into the first chamber 322 until the cigarette 40 abuts against the convex ring 321, thus forming a heat exchange space 31 between the cigarette 40 and the heating element 10. Then, the airflow flows into the heat exchange space 31 through the flow channel 11 opened on the heating element 10. During the flow of the airflow in the heating element 10, the first conductive element 21 and the second conductive element 22 are energized to raise the temperature of the heating element 10 to the set temperature. As the airflow flows in the heating element 10, it will exchange heat with the heating element 10. After the airflow flows out of the heating element 10 and enters the heat exchange space 31, the heated airflow will bake the cigarette 40 placed in the first chamber 322, so that the cigarette 40 is ignited by the output hot airflow without combustion.

[0049] like Figure 3The heating device further includes an insulating support, which includes a first support 35 and a second support 36. The first support 35 abuts against the first end of the heating element 10, and the second support 36 abuts against the second end of the heating element 10. Thus, the first support 35 and the second support 36 can restrict the axial movement of the heating element 10.

[0050] Specifically, the first support 35 includes a first support portion 351 and a second support portion 352 connected to the first support portion 351. The first support portion 351 is disposed between the cavity wall of the accommodating cavity 31 and the outer side wall of the heating element 10. The second support portion 352 extends radially along the heating element 10 and is disposed between the protruding ring 321 and the heating element 10. The second support portion 352 abuts against the first end of the heating element 40.

[0051] The second support 36 includes a third support portion 361 and a fourth support portion 362. The third support portion 361 is disposed between the cavity wall of the accommodating cavity 31 and the second conductive element 22. The fourth support portion 362 extends from the third support portion 361 toward the center of the heating element 10 and abuts against the second end of the heating element 10.

[0052] In this embodiment, both the first bracket 35 and the second bracket 36 are ceramic brackets. The ceramic brackets prevent the first bracket 35 and the second bracket 36 from acting as electrical connectors to conduct electricity between the heating element 10 and the first housing 32. In addition, the first bracket 35 is set as the upper bracket and the second bracket 36 is set as the lower bracket, and the first bracket 35 and the second bracket 36 are spaced apart.

[0053] like Figure 3 As shown, a limiting portion 13 extends radially from the first end of the heating element 10. A second conductive member 22 is disposed between the limiting portion 13 and the third support portion 361, with the first end of the second conductive member 22 abutting against the limiting portion 13 and the second end of the second conductive member 22 abutting against the third support portion 361. That is, the second conductive member 22 is disposed between the third support portion 361 and the limiting portion 13, and there is a gap between the third support portion 361 and the heating element 10 for accommodating the second end of the second conductive member 22. The second conductive member 22 can be embedded into this gap and limited by the heating element 10 and the third support portion 361.

[0054] Therefore, after the heating element 10 is installed in the second chamber 323, the first conductive element 21 and the second conductive element 22 are separated from the first housing 32 by the first bracket 35 and the second bracket 36, thus preventing a short circuit between the graphite and the first housing 32 after the first conductive element 21 and the second conductive element 22 are electrically connected. At the same time, directly heating the graphite through the first conductive element 21 and the second conductive element 22 is simpler than the traditional method of heating graphite through a heating wire, and there is no need to consider the insulation between the graphite and the first conductive element 21 and the second conductive element 22. That is, no additional insulating material is needed between the graphite and the first conductive element 21 and the second conductive element 22, thus effectively reducing the overall cost.

[0055] In addition, graphite is used as the heating element 10. Because graphite has a high degree of uniformity, the temperature of each part of the graphite remains basically the same after it is heated. When the airflow passes through the graphite, each part of the graphite can produce an almost uniform heating effect on the airflow, thus ensuring the uniformity of the airflow temperature after the graphite heats the airflow, and thus enabling the airflow to bake the cigarette evenly.

[0056] Meanwhile, the graphite is directly heated by electric heating via the first conductive element 21 and the second conductive element 22. That is, the graphite is directly used as the heating element 10. Compared with the method of heating graphite by conducting heat through a heating wire, the graphite is directly used as the heating element 10, which reduces heat loss and improves heat utilization.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0058] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0059] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A heating device for heating non-combustible cigarettes, characterized in that, include: A container having a receiving cavity, at least a portion of which is used to receive a cigarette. A heating element, wherein the heating element is disposed within the accommodating cavity, and the heating element has a flow channel for airflow; and A conductive component is disposed within the accommodating cavity and is electrically connected to the heating element. The heating element is configured to heat the airflow flowing through the flow channel after the conductive component is energized, and to bake the cigarette through the airflow.

2. The heating device for heating non-combustible cigarettes according to claim 1, characterized in that, The conductive component includes a first conductive element and a second conductive element, both of which are electrically connected to the heating element.

3. The heating device for heating non-combustible cigarettes according to claim 2, characterized in that, The heating element is provided with a mounting hole that extends through the heating element along its length. The first conductive element is disposed in the mounting hole, and the second conductive element is disposed on the outer peripheral surface of the heating element.

4. The heating device for heating non-combustible cigarettes according to claim 3, characterized in that, The first conductive element includes a conductive body, which is disposed in the mounting hole and penetrates the heating element, and the first end of the conductive body extending out of the mounting hole extends radially to form a limiting platform; The second conductive element has a ring-shaped structure and is disposed around the outer peripheral surface of the heating element so that when energized, the second conductive element is connected to the first conductive element.

5. The heating device for heating non-combustible cigarettes according to claim 4, characterized in that, The first conductive element extends from the second end of the cigarette stick to form a fixing portion, and the fixing portion is adapted to be provided with a fixing member to fix the first conductive element to the heating element.

6. The heating device for heating non-combustible cigarettes according to claim 2, characterized in that, The container includes a first shell and a second shell, the second shell being fitted over the first shell and connected to the first shell, and the outer side wall of the first shell and the inner side wall of the second shell forming a vacuum cavity.

7. The heating device for heating non-combustible cigarettes according to claim 6, characterized in that, The cavity wall of the accommodating cavity is provided with a convex ring, which separates the accommodating cavity to form a first chamber and a second chamber. The first chamber is connected to the second chamber. The first chamber is used to accommodate the cigarette stick, and the conductive component and the heating element are disposed in the second chamber.

8. The heating device for heating non-combustible cigarettes according to claim 7, characterized in that, The heating device further includes an insulating support, which is disposed between the inner wall of the container and the heating element. The insulating support includes a first support and a second support, with the first support abutting against a first end of the heating element and the second support abutting against a second end of the heating element.

9. The heating device for heating non-combustible cigarettes according to claim 8, characterized in that, The first support includes a first support portion and a second support portion connected to the first support portion. The first support portion is disposed between the cavity wall of the accommodating cavity and the outer wall of the heating element, and the second support portion is disposed between the convex ring and the heating element, and abuts against the first end of the heating element.

10. The heating device for heating non-combustible cigarettes according to claim 9, characterized in that, The second bracket includes a third support portion and a fourth support portion. The third support portion is disposed between the cavity wall of the accommodating cavity and the second conductive element. The fourth support portion extends from the third support portion toward the center of the heating element and abuts against the second end of the heating element.

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